December 2004 - Darwin-kernel

can IOKit driver be paged out?
by Parav Pandit 10 Dec '04

10 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Importance: Normal Hi, I just want to know, whenever we load IOKit driver using kextload command, does IOKit driver wired down in the memory or can it be paged out whenever there is a lack of memory? and what about the xnu_kernel, I think it can't be paged out otherwise who will do this paging? If I asked a very silly question, please pardon me for it. Regards, Parav Pandit _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: is mach_kernel compressed image?
by Parav Pandit 10 Dec '04

10 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Importance: Normal Hi, I got the answer, What I did is, I used the otool -h option on kernel image /mach_kernel. example: otool -h /mach_kernel. This prints mach-o header of the file. And output tells that file type is 0x2. If we look in to the osfmsk/mach-o/loader.h file, this 0x2 corresponds to MH_EXECUTE and flags are set to MH_NOUNDEFS which is obvious thing for kernel. Thanks, Parav Pandit > As we all know /mach_kernel is the xnu kernel. > Is this image is a compressed image of the kernel? > If it is compressed image than what compression algorithm is used? > where can i find a code for decompression? > Should I look in BootX or somewhere else? Regards, Parav Pandit _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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is mach_kernel compressed image?
by Parav Pandit 10 Dec '04

10 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Importance: Normal Hi, As we all know /mach_kernel is the xnu kernel. Is this image is a compressed image of the kernel? If it is compressed image than what compression algorithm is used? where can i find a code for decompression? Should I look in BootX or somewhere else? Regards, Parav Pandit _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: AppleRAID.kext problem
by Garth Cummings 09 Dec '04

09 Dec '04

site_archiver(a)lists.apple.com Delivered-To: Darwin-kernel(a)lists.apple.com Hi Yogesh, On Dec 9, 2004, at 7:03 AM, Yogesh P wrote: <snip> Regards, --gc __________________________________________________________________ Garth Cummings Apple Developer Technical Support gcummings(a)apple.com http://developer.apple.com/technicalsupport _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com Hi, I am going through AppleRAID darwin source code.I put some print statement using IOLog function in the sourecode to understand the exact flow of sourcecode.I downloaded the AppleRAID-1.5 source code for MAC OS X 10.3.3 and build that code.Then i load this kext using following command: kextload AppleRAID.kext and it shows me that the driver module successfully loaded. That just loaded the KEXT into the kernel. It may not have actually matched to the hardware if the original version of AppleRAID.kext was still on the system. You can confirm this using IORegistryExplorer or ioreg before doing the kextload. Then i run the diskutil to create mirror raid but the system log doesnot show any IOLog prints that i have put in the source code. I want to know, 1) Does diskutil use AppleRAID driver underneath to perform the raid operations? 2) If the AppleRAID driver module loaded successfully then why the IOLog messages doesn't gets printed in the system log? Loading and matching/starting are two separate things. Loading just makes the KEXT _available_ for matching, but if another driver has already started on a device, kextloading another driver won't replace the one already running. smime.p7s

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AppleRAID.kext problem
by Yogesh P 09 Dec '04

09 Dec '04

site_archiver(a)lists.apple.com Delivered-To: Darwin-kernel(a)lists.apple.com Hi, I am going through AppleRAID darwin source code.I put some print statement using IOLog function in the sourecode to understand the exact flow of sourcecode.I downloaded the AppleRAID-1.5 source code for MAC OS X 10.3.3 and build that code.Then i load this kext using following command: kextload AppleRAID.kext and it shows me that the driver module successfully loaded. Then i run the diskutil to create mirror raid but the system log doesnot show any IOLog prints that i have put in the source code. I want to know, 1) Does diskutil use AppleRAID driver underneath to perform the raid operations? 2) If the AppleRAID driver module loaded successfully then why the IOLog messages doesn't gets printed in the system log? I am using MAC OS X 10.3.3 with Darwin kernel version 7.3.3 and AppleRAID-1.5. Any pointers to this problem definetly helps. Thanks & Regards, Yogesh Pahilwan (SOFTWARE ENGINNER) S P Software Technologies (I) Pvt. Ltd. (ISO 9001:2000 Company) 4/38, Sumangala, Sahakari Vasahat, Off Karve Road, Erandwana, Pune - 411004. Maharashtra, INDIA --------------------------------------------------------------------- Tel # : + 91 – 020 – 4006983 / 4007503 / 4006154 Fax # : + 91 – 020 – 4006153 --------------------------------------------------------------------- Visit us at: www.spsoftindia.com --------------------------------------------------------------------- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: IOUSBDevice.h
by Godfrey van der Linden 08 Dec '04

08 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Godfrey On Dec 7, , at 18:16, Brian Jorgage wrote: I need the IOUSBDevice class but I cannot find IOUSBDevice.h on my machine. I have Xcode installed. So where do I get this ? I don't see anywhere on developer.apple.com where individual header files seem to be available for download. Do I need to download an upgrade to Xcode or is it a separate download ? _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Are you trying to do in kernel development? If so then the header is included by <IOKit/usb/IOUSBDevice.h> If you are outside of the kernel you probably want to use the IOKit Framework equivalent header family, which is <IOKit/usb/IOUSBLib.h> Shouldn't all necessary headers be included w/Xcode by default ? This email sent to site_archiver(a)lists.apple.com

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Re: IOUSBDevice.h
by Quinn 08 Dec '04

08 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com It definitely should be installed by default at the following path. /System/Library/Frameworks/Kernel.framework/Headers/IOKit/usb/IOUSBDevice.h S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 7:34 +0100 8/12/04, Kim-Thomas Moeller wrote: I'm not sure whether it should be available from XCode by default. This email sent to site_archiver(a)lists.apple.com

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Re: IOUSBDevice.h
by Kim-Thomas Moeller 08 Dec '04

08 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20041007 Debian/1.7.3-5 Thanks, Kim -- Kim-Thomas Moeller - kim(a)kim-thomas-moeller.de _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Brian Jorgage wrote: I need the IOUSBDevice class but I cannot find IOUSBDevice.h on my machine. Please have a look at the IOUSBFamily-214.4.5 archive from http://www.opensource.apple.com/darwinsource/10.3.6/. It contains IOUSBDevice.h in the IOUSBFamily/Headers/ subdirectory. I'm not sure whether it should be available from XCode by default. This email sent to site_archiver(a)lists.apple.com

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IOUSBDevice.h
by Brian Jorgage 08 Dec '04

08 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com I need the IOUSBDevice class but I cannot find IOUSBDevice.h on my machine. I have Xcode installed. So where do I get this ? I don't see anywhere on developer.apple.com where individual header files seem to be available for download. Do I need to download an upgrade to Xcode or is it a separate download ? Shouldn't all necessary headers be included w/Xcode by default ? Brian Jorgage _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: KP / gdb debug question...
by Garth Cummings 06 Dec '04

06 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Marek, On Dec 3, 2004, at 6:54 PM, Marek Kozubal wrote: Good luck, --gc __________________________________________________________________ Garth Cummings Apple Developer Technical Support gcummings(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com I know its 68 bytes into my function, but there's no Disassemble in XCode like there is in CodeWarriror that let me figure such things out. When you're in the kernel, you pretty much need to become friends with command-line GDB. GDB does have the "disassemble" command, or you can display memory in instruction format with the examine command "x/i". GDB's "help" command will give you more info on both. http://developer.apple.com/technicalsupport smime.p7s

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